title: Milliwatt-level fiber-coupled laser power from photonic crystal band-edge laser.
abstract: We report unprecedentedly high output powers measured from large area two-dimensional square-lattice photonic-crystal band-edge lasers (BELs), patterned by holographic lithography. In order to ensure mechanical rigidity, the BELs were fabricated in an InP-based epilayer bonded onto a fused silica substrate beforehand. The BEL devices, employing the surface-emitting Γ-point monopole band-edge mode, provide a fiber-coupled single mode output power as high as 2.6 mW and an external differential quantum efficiency of ~4%. The results of a three-dimensional finite-difference time-domain simulation agree with the experimental observation that the large BELs are beneficial for achieving both high power output and high differential quantum efficiency.
authors.affiliation: Department of Physics and Astronomy & Inter-university Semiconductor Research Center, Seoul National University, Seoul 151-747, South Korea.
authors.forename: Sunghwan
authors.initials: S
authors.lastname: Kim
authors.forename: Sungmo
authors.initials: S
authors.lastname: Ahn
authors.forename: Jeongkug
authors.initials: J
authors.lastname: Lee
authors.forename: Heonsu
authors.initials: H
authors.lastname: Jeon
authors.forename: Philippe
authors.initials: P
authors.lastname: Regreny
authors.forename: Christian
authors.initials: C
authors.lastname: Seassal
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Augendre
authors.forename: Lea
authors.initials: L
authors.lastname: Di Cioccio
mesh_terms: D003460:Crystallization / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D007834:Lasers; D017785:Photons